Let repaint tests test pixels by default

third_party/WebKit/LayoutTests/fast/repaint/resources/repaint.js

 // Asynchronous tests should manually call finishRepaintTest at the appropriate
 // time.
 window.testIsAsync = false;
 window.outputRepaintRects = true;
 window.generateMinimumRepaint = false; // See comments about 'Minimum repaint' below.
+window.enablePixelTesting = true;
 
 // All repaint tests are asynchronous.
 if (window.testRunner)
     testRunner.waitUntilDone();
 
 function runRepaintTest()
 {
     if (!window.testRunner || !window.internals) {
         setTimeout(repaintTest, 500);
         return;
@@ skipping 23 matching lines @@
             window.widthBeforeRepaint = width;
             window.heightBeforeRepaint = height;
             window.snapshotBeforeRepaint = snapshot;
             continueRepaintTest();
         });
     } else {
         testRunner.layoutAndPaintAsyncThen(continueRepaintTest);
     };
 }
 
-function runRepaintAndPixelTest()
-{
-    window.enablePixelTesting = true;
-    runRepaintTest();
-}
-
 function forceStyleRecalc()
 {
     if (document.body)
         document.body.clientTop;
     else if (document.documentElement)
         document.documentElement.clientTop;
 }
 
 function finishRepaintTest()
 {
@@ skipping 122 matching lines @@
             } else {
                 var newRect = [xBegin, y, xWidth, 1];
                 nextRectsMayContinue.push(newRect);
                 result.push(newRect);
             }
         }
         rectsMayContinue = nextRectsMayContinue;
     }
     return result;
 }